What is preventing him from using his many forum accounts to sabotage the trust level on another person's account?
I mean the way he did it in that image was obvious and stupid, but what is there to prevent a more systematic deliberate attempt spread out over a duration of time?
His untrusted feedback (and any untrusted feedback that he may leave from alt accounts) is pretty meaningless in the great scheme of things.
There's no way to prevent, in advance, anyone doing anything if they are determined, systematic and deliberate about it.
Using Trust Ratings improperly is a problem sometimes. The Reputation Child Board is one of the checks and balance mechanism the forum has for that, but moderators are not empowered to act (unless in extreme cases) as Theymos seems to see trust as a P2P situation.
What merits disciplinary action from moderators on these forums?
I have seen a lot of damage caused by multi-account users in my time, everything from spoofing bids during auctions to spreading or supporting false accusations.
SCENARIO ONE,
At this very moment, someone on this forum could be reading one of his self-moderated threads, full of positive feedback from his alternate forums profiles and decide to invest in one of the coins listed on VaultMex.
This user will learn that he cannot withdraw any of the assets that he invested into this exchange and after doing some research promptly learns that it is the policy of these forums to do nothing to prevent instances such as what just happened to him.
This forum member ceases using these forums as a result.
SCENARIO TWO,
A scammer learns from similar activities mentioned in the first scenario and decides to push the envelope even further, therefore, creating more instances of fraud and abuse. Other scammers see the same opportunity and proceed to advance their agenda and exploit it even further.